mtg sliver commander deck - Custom Built - Elite - - The First Sliver - EDH etched Display Commander (a thick cardstock copy of the commander card with foil etched into the card’s border and art) Which Sliver Commander is more

At the beginning of the next end step, sacrifice it

Kellan, Planar Trailblazer Rarity: Rare TYPE: Legendary Creature SUBTYPE: Human Faerie Scout CMC: 1 Mana cost: USD: $0.29 EUR: 0.29 TIX: 0.02 EDHREC RANK: 12353 (2/1) : If Kellan is a Scout, it becomes a Human Faerie Detective and gains "Whenever Kellan deals combat damage to a player, exile the top card of your library

MTGA-FRIENDLY TEXT LIST (CAN BE COPIED DIRECTLY INTO GAME CLIENT, FROM HERE USING "IMPORT") : 1 Huntmaster Liger (IKO) 16 1 Yidaro, Wandering Monster (IKO) 141 1 Gyruda, Doom of Depths (IKO) 221 1 Illuna, Apex of Wishes (IKO) 190 1 Brokkos, Apex of Forever (IKO) 179 1 Nethroi, Apex of Death (IKO) 197 1 Luminous Broodmoth (IKO) 21 1 Snapdax, Apex of the Hunt (IKO) 209 1 Titanoth Rex (IKO) 174 1 Everquill Phoenix (IKO) 114 1 Dirge Bat (IKO) 84 1 Gemrazer (IKO) 155 1 Vadrok, Apex of Thunder (IKO) 214 1 Crystalline Giant (IKO) 234 1 Sprite Dragon (IKO) 211 1 Pollywog Symbiote (IKO) 63 1 Mysterious Egg (IKO) 3 1 Void Beckoner (IKO) 104 Decklists featuring these cards (more to be added) : SHIN GODZILLA (2016), THE DECK Featuring Yidaro, Wandering Monster a/k/a Godzilla, Doom Inevitable and inspired 2016's Shin Godzilla

And given youre in the colors of reanimator, you can quite reliably sacrifice some pretty high mana value permanents

You have to exhaust each of those abilities when you use them, so it is just a one-time use with each one